On Wednesday, Prime Minister David Cameron of Britain appeared in Amritsar, in the Indian state of Punjab, where he laid a commemorative wreath at Jallianwala Bagh, the site of a 1919 massacre of Indian protesters by British forces that killed about 1,000, according to the Indian government....Here’s what a few historians and political science experts had to say:...Basudev Chatterji, professor of history at University of Delhi:It is something he is doing as a representative of a country. It is a diplomatic and human gesture.It is, of course, a shameful thing to fire at unarmed people.I personally don’t believe in correcting historical wrongs, but it is a perfectly decent thing to do on the part of the British prime minister....

David Cameron has been criticised for failing to meet the families of Indians killed by British troops as he tried to make amends for a "deeply shameful" Imperial massacre.The Prime Minister invoked Sir Winston Churchill as he lamented the "monstrous" killings in Amritsar in 1919.Mr Cameron flew to Amritsar at the end of a trade visit to Delhi and made a public show of British contrition over the massacre, which left at least 379 Sikh civilians dead.The Prime Minister visited a memorial in the Jallianwala Bagh gardens, laying a wreath and writing in a book of remembrance....